Diffuser



Jan. 16, 1968 G. J. SWEENEY 3,363,535

DIFFUSER Filed Nov. 16, 1965 -B 1156) C FIGLI INVENTOR. 1

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United States Patent 3,363,535 DIFFUSER George J. Sweeney, Plandome, N.Y., assignor to Air Devices, Inc., New York, N.Y., a corporation of New York Filed Nov. 16, 1965, Ser. No. 508,022 4 Claims. (Cl. 98-40) ABSTRACT OF THE DISCLOSURE A rectangular diffuser having a frame with a plurality of pivotally mouned elongated, double curved, air deflector scoops. These scoops are arranged in three banks so that a four-way blow may be achieved toward all four sides of the deflector frame. The middle bank is designed to cause the air to flow away from the diffuser both upwardly and downwardly transverse to the sides of the diffuser. The end banks are designed to cause the air to flow outwardly from the ends of the diffuser The invention of the present application is similar to the subject matter of application Ser. No. 191,154, now Patent No. 3,217,626.

The present invention relates to a ceiling diffuser and it particularly relates to a diffuser for controlling the flow and direction of air into a room.

It has been found most satisfactory to form the diffuser of a simple rectangular frame formed of four single extruded cross sections with an outside flush flange to be fitted against the wall which is parallel to the wall and inwardly directed transverse flanges extending inwardly through the opening in the wall and carrying the closely spaced vane elements.

A particular feature of the present invention resides in the fact that there are provided inside of the diffuser a plurality of double arcuate or curved vane elements with a central enlarged axial rod portion pivotally mounted in opposite transverse inwardly directed flanges of the frame elements. The vanes or blades are so curved that they act as scoops for the incoming air.

The flush flanges of the frame elements on their rear faces are desirably provided with channels which act both to receive sealing strips along the sides of frame and corner key elements at the corners to hold the frames together.

In the drawings:

FIG. 1 is a front elevational view showing the diffuser mounted upon the Wall.

FIG. 2 is a transverse sectional view of the diffuser upon the line 22 of FIG. 1.

FIG. 3 is a fragmentary transverse sectional view upon the line 33 of FIG. 1.

FIG. 4 is a transverse fragmentary sectional view similar to FIG. 3 showing the vanes upon an enlarged scale.

Referring to FIGS. 1 to 4, there is shown a frame A composed of two short extruded elements B and two long extruded elements C which may have the same cross section and are extruded as a continuous strip and then cut at 45 angles as indicated at the corner D in FIG. 2 and abutted against each other and held in position at the corner D.

Each of the sections are provided with the outside flush flange F with the rear channels H.

The flush flanges F at their inner edges have the oblique intermediate portions K which form a well on their outlet side L of the diffuser.

From the oblique well forming portions K, there extends inwardly the vertical transverse flanges M and N which extend into an opening in the wall or ceiling which is covered by the flush flanges F.

The blades R have a central pivotal portion S which is pivotally mounted on the flanges M. Each blade R has two arcuate curved outwardly curved scoop blade portions.

Referring particularly to the blade form shown in FIGS. 2, 3 and 4, the blade has a central axial portion 20 of cylindrical cross section with the convexly curved inner arcuate portions 21 adjacent the axial portion 20 and concavely curved side portions forming the main scoop portions 22 and terminating in the edges which may be cut off sharply as indicated at, 25 in FIG. 4.

It will be noted that the pivotal mounts at 20 are sub stantially inside of the inner edge 37 of the well formed by the oblique portions K and that the blades R extend at one side into the well formed by the oblique portions K and on the other side between the flanges M and N.

Normally, the blades R should at all times be positioned at their outer portions 25 as shown in FIG. 4 and will be inside of the well formed by the oblique sides K.

These curved vanes R are arranged in banks U, W and V and may be positioned to give a four way blow as indicated by the arrows 56 and 57 in FIG. 1.

The flush flange members F have inside channels H each of which has an outside ridge 58, and an inside ridge 59.

The channels between the ridges 58 and 59 may receive the right angular connections at corners D.

Bet-ween the corners the channels H will carry sealing gaskets.

The bevelled openings as shown in FIG. 1 will receive the attachment screws to enable the diffuser to be mounted upon a wall or a ceiling.

The U cross section beam members 76 separate the banks W, U, V and carry pivotal connections of the central banks U the ends of which are mounted in the sides of the U beams.

The invention provides a simple rigid readily installed double curved blade diffuser in which the blades R may be readily adjusted by tool or by hand to give a desired diffusion pattern.

As shown in FIG. 3, the outer curved portions 25 may be positioned parallel to or in the plane of the flush flange F in the position shown in FIG. 3, and the central inside edges may contact at to form a combined element as shown in FIG. 3 which will divert the air to both sides.

These blades may be turned through an angle of to 360 to give a wide variety of diffusion patterns and instead of the concave portions facing the incoming streams, it is possible that the convex portions may also be facing the incoming streams.

The oblique well formed by the side walls K will permit the air to expand as it is passing out of the diffuser.

To summarize the disclosure of the present invention it will be noted that the diffuser of FIG. 1 sets forth a multi-directional blow ceiling and wall diffusion which blows in directions 56 and 57, as indicated in FIG. 1, and that it has an inlet side to the top of FIG. 2 and the left of FIGS. 3 and 4 and an outlet side to the right of FIGS. 3 and 4 to the bottom of FIG. 2 and on the face of FIG. 1. The outside frames B and C are rectangular and are provided with inwardly directed flanges N which project through the opening in the wall and an outwardly extending flush flange indicated at F.

The beam members 76, as shown in FIG. 2, are of U- cross-section and the curved blade elements have parallel axial portions 20, which extend in different directions in the various areas separated by the beam members 76. In

the central area they extend transversely to their direction in the end areas.

The outwardly curved portions 22 are convexly curved downwardly, as indicated in FIG. 2, and concavely curved in an upward direction in FIG. 2. These blades may be regarded as being mounted on central axial rods, or they may be regarded as blades with double curvature having a central axial rodlike portion, and they are rotatably mounted in the beam members 76 and in the flanges N.

Althugh a four way blow is shown in FIGS. 1 to 4, this may be converted into a three or two way blow arrangement.

Having now particularly described and ascertained the nature of the invention, and in what manner the same is to be performed.

What is claimed is:

1. A multi-directional-blow ceiling and wall ditfuser having an inlet side and an outlet side for controlling the flow and direction of conditioning and Ventilating air into a room and having a rectangular frame formed of side and end frame walls each provided with an outside outwardly extending flush flange to be fitted against the wall, said frame walls having inwardly directed flanges to extend inwardly through the opening in the wall, beam members extending parallel to and spaced from the end frame walls and connected between the side frame walls forming end recangular areas and a central rectangular area within said rectangular frame, a plurality of curved scoop-like blades with central parallel axial portions rotatably mounted on the inwardly directed side frame walls in each of said end rectangular areas and a plurality of transversely extending curved scoop-like blades with central parallel axial portions perpendicular to said aforementioned axial portions rotatably mounted at their ends on the sides of said beam members, said curved blades on both sides of each of said rod portions, said blades having outwardly curved portions on each side of said rod portions, each blade being convexly curved in one direction and concavely curved in the other direction.

2. A diffuser as set forth in claim 1, wherein the blades are so spaced as to be rotatable through independently of each other so that the air flow can be directed outwardly from each side of the frame.

3. A ditfuser as set forth in claim 1, wherein the flush flange on each of the walls is ridged on its inside face to receive a sealing means.

4. The diffuser of claim 1, said beam members being of U-cross section and having their open ends terminating substantially inside of the inwardly directed flanges and the closed ends terminating substantially inside of said fiush flanges.

References Cited UNITED STATES PATENTS 2,983,214- 5/1961 ODay 9840 2,997,939 8/1961 Snyder 98110 3,012,494 12/1961 Drumrnond 9840 3,217,626 11/1965 Sweeney 9840 ROBERT A. OLEARY, Primary Examiner.

M. A. ANTONAKAS, Assistant Examiner. 

